Turbine vanes with variable fillets

US9982548B2 · kind B2 · utility

Assignee

• UNITED TECHNOLOGIES CORPORATION · US

Inventors

• John T. Ols · Northborough, US
• Karl A. Mentz · Town of East Hartford, US
• Richard N. Allen · Town of West Hartford, US
• Steven D. Porter · Wethersfield, US
• Renee J. Jurek · Manchester, US
• Paul K. Sanchez · Wellington, US
• Sandra S. Pinero · Middletown, US

Key dates

• Filing date: Jun 25, 2014
• Grant date: May 29, 2018
• Expiry date: Feb 20, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An airfoil extends between radially inner and radially outer platforms. The airfoil extends between a leading edge and a trailing edge, and merges into facing surfaces of the radially inner and outer platforms. A variable fillet merges a facing surface of one of the radially inner and outer platforms into a wall of the airfoil. The variable fillet has a length extending away from a surface of the airfoil and a height extending away from the facing surface of at least one of the radially inner and outer platforms outwardly on to the airfoil. The variable fillet has a greater length at one of the leading edge and the trailing edge. A spaced portion has a shorter length at locations spaced from at least one of the leading and trailing edges. A mid-turbine frame and a gas turbine engine are also disclosed.